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<div class="header">
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<div class="title">opennurbs_texture_mapping.h</div>  </div>
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<div class="contents">
<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="comment">/* $NoKeywords: $ */</span></div>
<div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="comment">/*</span></div>
<div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="comment">// Copyright (c) 1993-2012 Robert McNeel &amp; Associates. All rights reserved.</span></div>
<div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="comment">// OpenNURBS, Rhinoceros, and Rhino3D are registered trademarks of Robert</span></div>
<div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="comment">// McNeel &amp; Associates.</span></div>
<div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;<span class="comment">// THIS SOFTWARE IS PROVIDED &quot;AS IS&quot; WITHOUT EXPRESS OR IMPLIED WARRANTY.</span></div>
<div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;<span class="comment">// ALL IMPLIED WARRANTIES OF FITNESS FOR ANY PARTICULAR PURPOSE AND OF</span></div>
<div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;<span class="comment">// MERCHANTABILITY ARE HEREBY DISCLAIMED.</span></div>
<div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;<span class="comment">//              </span></div>
<div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;<span class="comment">// For complete openNURBS copyright information see &lt;http://www.opennurbs.org&gt;.</span></div>
<div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;<span class="comment">*/</span></div>
<div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160; </div>
<div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;<span class="comment">//   defines ON_TextureMapping</span></div>
<div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;<span class="preprocessor">#if !defined(OPENNURBS_TEXTURE_MAPPING_INC_)</span></div>
<div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;<span class="preprocessor">#define OPENNURBS_TEXTURE_MAPPING_INC_</span></div>
<div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160; </div>
<div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;<span class="comment">// Class ON_TextureMapping</span></div>
<div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;<span class="keyword">class </span><a class="code" href="class_o_n___line.html">ON_Line</a>;</div>
<div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;<span class="keyword">class </span><a class="code" href="class_o_n___brep_face.html">ON_BrepFace</a>;</div>
<div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;<span class="keyword">class </span><a class="code" href="class_o_n__3d_point.html">ON_3dPoint</a>;</div>
<div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160; </div>
<div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;<span class="keyword">typedef</span> int  ( *TEXMAP_INTERSECT_LINE_SURFACE )( <span class="keyword">const</span> <a class="code" href="class_o_n___line.html">ON_Line</a>*, <span class="keyword">const</span> <a class="code" href="class_o_n___brep_face.html">ON_BrepFace</a>*, <a class="code" href="class_o_n___simple_array.html">ON_SimpleArray&lt;ON_X_EVENT&gt;</a>&amp; );</div>
<div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;<span class="keyword">typedef</span> bool ( *TEXMAP_BREP_FACE_CLOSEST_POINT )( <span class="keyword">const</span> <a class="code" href="class_o_n___brep_face.html">ON_BrepFace</a>*, <span class="keyword">const</span> <a class="code" href="class_o_n__3d_point.html">ON_3dPoint</a>*, <a class="code" href="class_o_n__3d_point.html">ON_3dPoint</a>&amp; );</div>
<div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160; </div>
<div class="line"><a name="l00037"></a><span class="lineno"><a class="line" href="class_o_n___texture_mapping.html">   37</a></span>&#160;<span class="keyword">class </span>ON_CLASS <a class="code" href="class_o_n___texture_mapping.html">ON_TextureMapping</a> : <span class="keyword">public</span> <a class="code" href="class_o_n___object.html">ON_Object</a></div>
<div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;{</div>
<div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;<span class="keyword">public</span>:</div>
<div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;    ON_OBJECT_DECLARE(<a class="code" href="class_o_n___texture_mapping.html">ON_TextureMapping</a>);</div>
<div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160; </div>
<div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;    <a class="code" href="class_o_n___texture_mapping.html">ON_TextureMapping</a>();</div>
<div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;    ~<a class="code" href="class_o_n___texture_mapping.html">ON_TextureMapping</a>();</div>
<div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160; </div>
<div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;    <span class="comment">// The copy constructor and operator= overrides are needed</span></div>
<div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;  <span class="comment">// to ensure m_geometry is properly copied.</span></div>
<div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;    <a class="code" href="class_o_n___texture_mapping.html">ON_TextureMapping</a>(<span class="keyword">const</span> <a class="code" href="class_o_n___texture_mapping.html">ON_TextureMapping</a>&amp; src);</div>
<div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;    <a class="code" href="class_o_n___texture_mapping.html">ON_TextureMapping</a>&amp; operator=(<span class="keyword">const</span> <a class="code" href="class_o_n___texture_mapping.html">ON_TextureMapping</a>&amp; src);</div>
<div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160; </div>
<div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;  <span class="comment">// overrides virtual ON_Object::IsValid</span></div>
<div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;  ON_BOOL32 IsValid( <a class="code" href="class_o_n___text_log.html">ON_TextLog</a>* text_log = NULL ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160; </div>
<div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;  <span class="comment">// overrides virtual ON_Object::Dump</span></div>
<div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;  <span class="keywordtype">void</span> Dump( <a class="code" href="class_o_n___text_log.html">ON_TextLog</a>&amp; ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160; </div>
<div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;  <span class="comment">// overrides virtual ON_Object::SizeOf</span></div>
<div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> SizeOf() <span class="keyword">const</span>;</div>
<div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160; </div>
<div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;  <span class="comment">// overrides virtual ON_Object::Write</span></div>
<div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;  ON_BOOL32 Write(</div>
<div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;         <a class="code" href="class_o_n___binary_archive.html">ON_BinaryArchive</a>&amp; binary_archive</div>
<div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;       ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160; </div>
<div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;  <span class="comment">// overrides virtual ON_Object::Read</span></div>
<div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;  ON_BOOL32 Read(</div>
<div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;         <a class="code" href="class_o_n___binary_archive.html">ON_BinaryArchive</a>&amp; binary_archive</div>
<div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;       );</div>
<div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160; </div>
<div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;  <span class="keywordtype">void</span> Default();</div>
<div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160; </div>
<div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;  <span class="keyword">virtual</span></div>
<div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;  <a class="code" href="class_o_n___u_u_i_d.html">ON_UUID</a> ModelObjectId() <span class="keyword">const</span>;</div>
<div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160; </div>
<div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;    <span class="comment">/*</span></div>
<div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;<span class="comment">    Determines whether the mapping, as currently set up, requires vertex normals to be present on the</span></div>
<div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;<span class="comment">    mesh in order to evaluate the mapping correctly.</span></div>
<div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;<span class="comment">        */</span></div>
<div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;    <span class="keywordtype">bool</span> RequiresVertexNormals() <span class="keyword">const</span>;</div>
<div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;    <span class="keywordtype">bool</span> IsPeriodic(<span class="keywordtype">void</span>) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160; </div>
<div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;<span class="comment">      Create a mapping that will convert surface parameters into </span></div>
<div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;<span class="comment">    normalized (0,1)x(0,1) texture coordinates.</span></div>
<div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;<span class="comment">    */</span></div>
<div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;    <span class="keywordtype">bool</span> SetSurfaceParameterMapping(<span class="keywordtype">void</span>);</div>
<div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160; </div>
<div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;<span class="comment">    Create a planar projection texture mapping.</span></div>
<div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;<span class="comment">    plane - [in]</span></div>
<div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;<span class="comment">    dx - [in]  portion of the plane&#39;s x axis that is mapped to [0,1]</span></div>
<div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;<span class="comment">               (can be a decreasing interval)               </span></div>
<div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;<span class="comment">    dy - [in]  portion of the plane&#39;s x axis that is mapped to [0,1]</span></div>
<div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;<span class="comment">               (can be a decreasing interval)               </span></div>
<div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;<span class="comment">    dz - [in]  portion of the plane&#39;s x axis that is mapped to [0,1]</span></div>
<div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;<span class="comment">               (can be a decreasing interval)       </span></div>
<div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;<span class="comment">    projection_method - [in] </span></div>
<div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;<span class="comment">        1: Closest point mapping.</span></div>
<div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;<span class="comment">          A target point P is mapped to the point on the plane</span></div>
<div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;<span class="comment">          that is closest to P.  The target normal is ignored.</span></div>
<div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;<span class="comment">        2: Target line mapping.  A target point-vector pair</span></div>
<div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;<span class="comment">          (P, N), are mapped to the point on the plane</span></div>
<div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;<span class="comment">          where the line through P, parallel to N, intersects</span></div>
<div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;<span class="comment">          the plane.  If the line is parallel to the plane,</span></div>
<div class="line"><a name="l00107"></a><span class="lineno">  107</span>&#160;<span class="comment">          the closest point mapping is used.</span></div>
<div class="line"><a name="l00108"></a><span class="lineno">  108</span>&#160;<span class="comment">  Example:</span></div>
<div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160;<span class="comment">    Create a mapping that maps the world axis aligned rectangle in</span></div>
<div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;<span class="comment">    the world yz plane with corners at (0,3,5) and (0,7,19) to the</span></div>
<div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;<span class="comment">    texture coordinate unit square.</span></div>
<div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l00113"></a><span class="lineno">  113</span>&#160;<span class="comment">          ON_3dVector plane_xaxis(0.0,1.0,0.0);</span></div>
<div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160;<span class="comment">          ON_3dVector plane_yaxis(0.0,0,0,1.0);</span></div>
<div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;<span class="comment">          ON_3dPoint plane_origin(0.0,2.0,4.0);</span></div>
<div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160;<span class="comment">          ON_Plane plane(plane_origin,plane_xaxis,plane_yaxis);</span></div>
<div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;<span class="comment">          ON_Interval dx( 0.0, 7.0 - 3.0);</span></div>
<div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160;<span class="comment">          ON_Interval dy( 0.0, 19.0 - 5.0);</span></div>
<div class="line"><a name="l00119"></a><span class="lineno">  119</span>&#160;<span class="comment">          ON_Interval dz( 0.0, 1.0 );</span></div>
<div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160;<span class="comment">          ON_TextureMapping mapping;</span></div>
<div class="line"><a name="l00121"></a><span class="lineno">  121</span>&#160;<span class="comment">          mapping.CreatePlaneMapping(plane,dx,dy,dz);</span></div>
<div class="line"><a name="l00122"></a><span class="lineno">  122</span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l00123"></a><span class="lineno">  123</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00124"></a><span class="lineno">  124</span>&#160;<span class="comment">    True if input is valid.</span></div>
<div class="line"><a name="l00125"></a><span class="lineno">  125</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160;  <span class="keywordtype">bool</span> SetPlaneMapping(</div>
<div class="line"><a name="l00127"></a><span class="lineno">  127</span>&#160;            <span class="keyword">const</span> <a class="code" href="class_o_n___plane.html">ON_Plane</a>&amp; plane,</div>
<div class="line"><a name="l00128"></a><span class="lineno">  128</span>&#160;            <span class="keyword">const</span> <a class="code" href="class_o_n___interval.html">ON_Interval</a>&amp; dx,</div>
<div class="line"><a name="l00129"></a><span class="lineno">  129</span>&#160;            <span class="keyword">const</span> <a class="code" href="class_o_n___interval.html">ON_Interval</a>&amp; dy,</div>
<div class="line"><a name="l00130"></a><span class="lineno">  130</span>&#160;            <span class="keyword">const</span> <a class="code" href="class_o_n___interval.html">ON_Interval</a>&amp; dz</div>
<div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160;            );</div>
<div class="line"><a name="l00132"></a><span class="lineno">  132</span>&#160; </div>
<div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00134"></a><span class="lineno">  134</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160;<span class="comment">    Create a cylindrical projection texture mapping.</span></div>
<div class="line"><a name="l00136"></a><span class="lineno">  136</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l00137"></a><span class="lineno">  137</span>&#160;<span class="comment">    cylinder - [in]  </span></div>
<div class="line"><a name="l00138"></a><span class="lineno">  138</span>&#160;<span class="comment">        cylinder in world space used to define a cylindrical</span></div>
<div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160;<span class="comment">        coordinate system.  The angular parameter maps (0,2pi)</span></div>
<div class="line"><a name="l00140"></a><span class="lineno">  140</span>&#160;<span class="comment">        to texture &quot;u&quot; (0,1), The height parameter maps </span></div>
<div class="line"><a name="l00141"></a><span class="lineno">  141</span>&#160;<span class="comment">        (height[0],height[1]) to texture &quot;v&quot; (0,1), and </span></div>
<div class="line"><a name="l00142"></a><span class="lineno">  142</span>&#160;<span class="comment">        the radial parameter maps (0,r) to texture &quot;w&quot; (0,1).</span></div>
<div class="line"><a name="l00143"></a><span class="lineno">  143</span>&#160;<span class="comment">    bIsCapped - [in]</span></div>
<div class="line"><a name="l00144"></a><span class="lineno">  144</span>&#160;<span class="comment">        If true, the cylinder is treated as a finite</span></div>
<div class="line"><a name="l00145"></a><span class="lineno">  145</span>&#160;<span class="comment">        capped cylinder.          </span></div>
<div class="line"><a name="l00146"></a><span class="lineno">  146</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00147"></a><span class="lineno">  147</span>&#160;<span class="comment">    True if input is valid.</span></div>
<div class="line"><a name="l00148"></a><span class="lineno">  148</span>&#160;<span class="comment">  Remarks:</span></div>
<div class="line"><a name="l00149"></a><span class="lineno">  149</span>&#160;<span class="comment">    When the cylinder is capped and m_texture_space = divided, </span></div>
<div class="line"><a name="l00150"></a><span class="lineno">  150</span>&#160;<span class="comment">    the cylinder is mapped to texture space as follows:</span></div>
<div class="line"><a name="l00151"></a><span class="lineno">  151</span>&#160;<span class="comment">      The side is mapped to 0 &lt;= &quot;u&quot; &lt;= 2/3.</span></div>
<div class="line"><a name="l00152"></a><span class="lineno">  152</span>&#160;<span class="comment">      The bottom is mapped to 2/3 &lt;= &quot;u&quot; &lt;= 5/6.</span></div>
<div class="line"><a name="l00153"></a><span class="lineno">  153</span>&#160;<span class="comment">      The top is mapped to 5/6 &lt;= &quot;u&quot; &lt;= 5/6.</span></div>
<div class="line"><a name="l00154"></a><span class="lineno">  154</span>&#160;<span class="comment">    This is the same convention box mapping uses.</span></div>
<div class="line"><a name="l00155"></a><span class="lineno">  155</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00156"></a><span class="lineno">  156</span>&#160;    <span class="keywordtype">bool</span> SetCylinderMapping( </div>
<div class="line"><a name="l00157"></a><span class="lineno">  157</span>&#160;         <span class="keyword">const</span> <a class="code" href="class_o_n___cylinder.html">ON_Cylinder</a>&amp; cylinder,</div>
<div class="line"><a name="l00158"></a><span class="lineno">  158</span>&#160;         <span class="keywordtype">bool</span> bIsCapped</div>
<div class="line"><a name="l00159"></a><span class="lineno">  159</span>&#160;    );</div>
<div class="line"><a name="l00160"></a><span class="lineno">  160</span>&#160; </div>
<div class="line"><a name="l00161"></a><span class="lineno">  161</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00162"></a><span class="lineno">  162</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00163"></a><span class="lineno">  163</span>&#160;<span class="comment">    Create a spherical projection texture mapping.</span></div>
<div class="line"><a name="l00164"></a><span class="lineno">  164</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l00165"></a><span class="lineno">  165</span>&#160;<span class="comment">    sphere - [in]  </span></div>
<div class="line"><a name="l00166"></a><span class="lineno">  166</span>&#160;<span class="comment">        sphere in world space used to define a spherical</span></div>
<div class="line"><a name="l00167"></a><span class="lineno">  167</span>&#160;<span class="comment">        coordinate system. The longitude parameter maps</span></div>
<div class="line"><a name="l00168"></a><span class="lineno">  168</span>&#160;<span class="comment">        (0,2pi) to texture &quot;u&quot; (0,1).  The latitude paramter</span></div>
<div class="line"><a name="l00169"></a><span class="lineno">  169</span>&#160;<span class="comment">        maps (-pi/2,+pi/2) to texture &quot;v&quot; (0,1).</span></div>
<div class="line"><a name="l00170"></a><span class="lineno">  170</span>&#160;<span class="comment">        The radial parameter maps (0,r) to texture &quot;w&quot; (0,1).</span></div>
<div class="line"><a name="l00171"></a><span class="lineno">  171</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00172"></a><span class="lineno">  172</span>&#160;<span class="comment">    True if input is valid.</span></div>
<div class="line"><a name="l00173"></a><span class="lineno">  173</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00174"></a><span class="lineno">  174</span>&#160;    <span class="keywordtype">bool</span> SetSphereMapping( </div>
<div class="line"><a name="l00175"></a><span class="lineno">  175</span>&#160;         <span class="keyword">const</span> <a class="code" href="class_o_n___sphere.html">ON_Sphere</a>&amp; sphere</div>
<div class="line"><a name="l00176"></a><span class="lineno">  176</span>&#160;    );</div>
<div class="line"><a name="l00177"></a><span class="lineno">  177</span>&#160; </div>
<div class="line"><a name="l00178"></a><span class="lineno">  178</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00179"></a><span class="lineno">  179</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00180"></a><span class="lineno">  180</span>&#160;<span class="comment">    Create a box projection texture mapping.</span></div>
<div class="line"><a name="l00181"></a><span class="lineno">  181</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l00182"></a><span class="lineno">  182</span>&#160;<span class="comment">    plane - [in]  </span></div>
<div class="line"><a name="l00183"></a><span class="lineno">  183</span>&#160;<span class="comment">        The sides of the box the box are parallel to the </span></div>
<div class="line"><a name="l00184"></a><span class="lineno">  184</span>&#160;<span class="comment">        plane&#39;s coordinate planes.  The dx, dy, dz intervals</span></div>
<div class="line"><a name="l00185"></a><span class="lineno">  185</span>&#160;<span class="comment">        determine the location of the sides.</span></div>
<div class="line"><a name="l00186"></a><span class="lineno">  186</span>&#160;<span class="comment">    dx - [in]</span></div>
<div class="line"><a name="l00187"></a><span class="lineno">  187</span>&#160;<span class="comment">       Determines the location of the front and back planes.</span></div>
<div class="line"><a name="l00188"></a><span class="lineno">  188</span>&#160;<span class="comment">       The vector plane.xaxis is perpendicular to these planes</span></div>
<div class="line"><a name="l00189"></a><span class="lineno">  189</span>&#160;<span class="comment">       and they pass through plane.PointAt(dx[0],0,0) and</span></div>
<div class="line"><a name="l00190"></a><span class="lineno">  190</span>&#160;<span class="comment">       plane.PointAt(dx[1],0,0), respectivly.</span></div>
<div class="line"><a name="l00191"></a><span class="lineno">  191</span>&#160;<span class="comment">    dy - [in]</span></div>
<div class="line"><a name="l00192"></a><span class="lineno">  192</span>&#160;<span class="comment">       Determines the location of the left and right planes.</span></div>
<div class="line"><a name="l00193"></a><span class="lineno">  193</span>&#160;<span class="comment">       The vector plane.yaxis is perpendicular to these planes</span></div>
<div class="line"><a name="l00194"></a><span class="lineno">  194</span>&#160;<span class="comment">       and they pass through plane.PointAt(0,dy[0],0) and</span></div>
<div class="line"><a name="l00195"></a><span class="lineno">  195</span>&#160;<span class="comment">       plane.PointAt(0,dy[1],0), respectivly.</span></div>
<div class="line"><a name="l00196"></a><span class="lineno">  196</span>&#160;<span class="comment">    dz - [in] </span></div>
<div class="line"><a name="l00197"></a><span class="lineno">  197</span>&#160;<span class="comment">       Determines the location of the top and bottom planes.</span></div>
<div class="line"><a name="l00198"></a><span class="lineno">  198</span>&#160;<span class="comment">       The vector plane.zaxis is perpendicular to these planes</span></div>
<div class="line"><a name="l00199"></a><span class="lineno">  199</span>&#160;<span class="comment">       and they pass through plane.PointAt(0,0,dz[0]) and</span></div>
<div class="line"><a name="l00200"></a><span class="lineno">  200</span>&#160;<span class="comment">       plane.PointAt(0,0,dz[1]), respectivly.</span></div>
<div class="line"><a name="l00201"></a><span class="lineno">  201</span>&#160;<span class="comment">    bIsCapped - [in]</span></div>
<div class="line"><a name="l00202"></a><span class="lineno">  202</span>&#160;<span class="comment">        If true, the box is treated as a finite</span></div>
<div class="line"><a name="l00203"></a><span class="lineno">  203</span>&#160;<span class="comment">        capped box.          </span></div>
<div class="line"><a name="l00204"></a><span class="lineno">  204</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00205"></a><span class="lineno">  205</span>&#160;<span class="comment">    True if input is valid.</span></div>
<div class="line"><a name="l00206"></a><span class="lineno">  206</span>&#160;<span class="comment">  Remarks:</span></div>
<div class="line"><a name="l00207"></a><span class="lineno">  207</span>&#160;<span class="comment">    When m_texture_space = divided, the box is mapped to texture </span></div>
<div class="line"><a name="l00208"></a><span class="lineno">  208</span>&#160;<span class="comment">    space as follows:</span></div>
<div class="line"><a name="l00209"></a><span class="lineno">  209</span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l00210"></a><span class="lineno">  210</span>&#160;<span class="comment">    If the box is not capped, then each side maps to 1/4 of the texture map.</span></div>
<div class="line"><a name="l00211"></a><span class="lineno">  211</span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l00212"></a><span class="lineno">  212</span>&#160;<span class="comment">          v=1+---------+---------+---------+---------+</span></div>
<div class="line"><a name="l00213"></a><span class="lineno">  213</span>&#160;<span class="comment">             | x=dx[1] | y=dy[1] | x=dx[0] | y=dy[0] |</span></div>
<div class="line"><a name="l00214"></a><span class="lineno">  214</span>&#160;<span class="comment">             | Front   | Right   | Back    | Left    |</span></div>
<div class="line"><a name="l00215"></a><span class="lineno">  215</span>&#160;<span class="comment">             | --y-&gt;   | &lt;-x--   | &lt;-y--   | --x-&gt;   |</span></div>
<div class="line"><a name="l00216"></a><span class="lineno">  216</span>&#160;<span class="comment">          v=0+---------+---------+---------+---------+</span></div>
<div class="line"><a name="l00217"></a><span class="lineno">  217</span>&#160;<span class="comment">            0/4 &lt;=u&lt;= 1/4 &lt;=u&lt;= 2/4 &lt;=u&lt;= 3/4 &lt;=u&lt;= 4/4</span></div>
<div class="line"><a name="l00218"></a><span class="lineno">  218</span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l00219"></a><span class="lineno">  219</span>&#160;<span class="comment">    If the box is capped, then each side and cap gets 1/6 of the texture map.</span></div>
<div class="line"><a name="l00220"></a><span class="lineno">  220</span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l00221"></a><span class="lineno">  221</span>&#160;<span class="comment">          v=1+---------+---------+---------+---------+---------+---------+</span></div>
<div class="line"><a name="l00222"></a><span class="lineno">  222</span>&#160;<span class="comment">             | x=dx[1] | y=dy[1] | x=dx[0] | y=dy[0] | z=dx[1] | z=dz[0] |</span></div>
<div class="line"><a name="l00223"></a><span class="lineno">  223</span>&#160;<span class="comment">             | Front   | Right   | Back    | Left    | Top     |  Bottom |</span></div>
<div class="line"><a name="l00224"></a><span class="lineno">  224</span>&#160;<span class="comment">             | --y-&gt;   | &lt;-x--   | &lt;-y--   | --x-&gt;   | --x-&gt;   | --x-&gt;   |</span></div>
<div class="line"><a name="l00225"></a><span class="lineno">  225</span>&#160;<span class="comment">          v=0+---------+---------+---------+---------+---------+---------+</span></div>
<div class="line"><a name="l00226"></a><span class="lineno">  226</span>&#160;<span class="comment">            0/6 &lt;=u&lt;= 1/6 &lt;=u&lt;= 2/6 &lt;=u&lt;= 3/6 &lt;=u&lt;= 4/6 &lt;=u&lt;= 5/6 &lt;=u&lt;= 6/6 </span></div>
<div class="line"><a name="l00227"></a><span class="lineno">  227</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00228"></a><span class="lineno">  228</span>&#160;    <span class="keywordtype">bool</span> SetBoxMapping( </div>
<div class="line"><a name="l00229"></a><span class="lineno">  229</span>&#160;         <span class="keyword">const</span> <a class="code" href="class_o_n___plane.html">ON_Plane</a>&amp; plane,</div>
<div class="line"><a name="l00230"></a><span class="lineno">  230</span>&#160;         <a class="code" href="class_o_n___interval.html">ON_Interval</a> dx,</div>
<div class="line"><a name="l00231"></a><span class="lineno">  231</span>&#160;         <a class="code" href="class_o_n___interval.html">ON_Interval</a> dy,</div>
<div class="line"><a name="l00232"></a><span class="lineno">  232</span>&#160;         <a class="code" href="class_o_n___interval.html">ON_Interval</a> dz,</div>
<div class="line"><a name="l00233"></a><span class="lineno">  233</span>&#160;     <span class="keywordtype">bool</span> bIsCapped</div>
<div class="line"><a name="l00234"></a><span class="lineno">  234</span>&#160;    );</div>
<div class="line"><a name="l00235"></a><span class="lineno">  235</span>&#160; </div>
<div class="line"><a name="l00236"></a><span class="lineno">  236</span>&#160;    <span class="comment">/*</span></div>
<div class="line"><a name="l00237"></a><span class="lineno">  237</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00238"></a><span class="lineno">  238</span>&#160;<span class="comment">    Get plane mapping parameters from this texture mapping.</span></div>
<div class="line"><a name="l00239"></a><span class="lineno">  239</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l00240"></a><span class="lineno">  240</span>&#160;<span class="comment">    plane - [out]</span></div>
<div class="line"><a name="l00241"></a><span class="lineno">  241</span>&#160;<span class="comment">    dx - [out]</span></div>
<div class="line"><a name="l00242"></a><span class="lineno">  242</span>&#160;<span class="comment">      Portion of the plane&#39;s x axis that is mapped to [0,1]</span></div>
<div class="line"><a name="l00243"></a><span class="lineno">  243</span>&#160;<span class="comment">    dy - [out]</span></div>
<div class="line"><a name="l00244"></a><span class="lineno">  244</span>&#160;<span class="comment">      Portion of the plane&#39;s y axis that is mapped to [0,1]</span></div>
<div class="line"><a name="l00245"></a><span class="lineno">  245</span>&#160;<span class="comment">    dz - [out]</span></div>
<div class="line"><a name="l00246"></a><span class="lineno">  246</span>&#160;<span class="comment">      Portion of the plane&#39;s z axis that is mapped to [0,1]</span></div>
<div class="line"><a name="l00247"></a><span class="lineno">  247</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00248"></a><span class="lineno">  248</span>&#160;<span class="comment">      True if valid plane mapping parameters were returned.</span></div>
<div class="line"><a name="l00249"></a><span class="lineno">  249</span>&#160;<span class="comment">  Remarks:</span></div>
<div class="line"><a name="l00250"></a><span class="lineno">  250</span>&#160;<span class="comment">    NOTE WELL:</span></div>
<div class="line"><a name="l00251"></a><span class="lineno">  251</span>&#160;<span class="comment">      Generally, GetMappingPlane will not return the same</span></div>
<div class="line"><a name="l00252"></a><span class="lineno">  252</span>&#160;<span class="comment">      parameters passed to SetPlaneMapping.  However, the</span></div>
<div class="line"><a name="l00253"></a><span class="lineno">  253</span>&#160;<span class="comment">      location of the plane will be the same.</span></div>
<div class="line"><a name="l00254"></a><span class="lineno">  254</span>&#160;<span class="comment">    */</span></div>
<div class="line"><a name="l00255"></a><span class="lineno">  255</span>&#160;    <span class="keywordtype">bool</span> GetMappingPlane(</div>
<div class="line"><a name="l00256"></a><span class="lineno">  256</span>&#160;         <a class="code" href="class_o_n___plane.html">ON_Plane</a>&amp; plane,</div>
<div class="line"><a name="l00257"></a><span class="lineno">  257</span>&#160;         <a class="code" href="class_o_n___interval.html">ON_Interval</a>&amp; dx,</div>
<div class="line"><a name="l00258"></a><span class="lineno">  258</span>&#160;         <a class="code" href="class_o_n___interval.html">ON_Interval</a>&amp; dy,</div>
<div class="line"><a name="l00259"></a><span class="lineno">  259</span>&#160;         <a class="code" href="class_o_n___interval.html">ON_Interval</a>&amp; dz</div>
<div class="line"><a name="l00260"></a><span class="lineno">  260</span>&#160;       ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00261"></a><span class="lineno">  261</span>&#160; </div>
<div class="line"><a name="l00262"></a><span class="lineno">  262</span>&#160;    <span class="comment">/*</span></div>
<div class="line"><a name="l00263"></a><span class="lineno">  263</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00264"></a><span class="lineno">  264</span>&#160;<span class="comment">      Get a cylindrical projection parameters from this texture mapping.</span></div>
<div class="line"><a name="l00265"></a><span class="lineno">  265</span>&#160;<span class="comment">    Parameters:</span></div>
<div class="line"><a name="l00266"></a><span class="lineno">  266</span>&#160;<span class="comment">      cylinder - [out]  </span></div>
<div class="line"><a name="l00267"></a><span class="lineno">  267</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00268"></a><span class="lineno">  268</span>&#160;<span class="comment">      True if a valid cylinder is returned.</span></div>
<div class="line"><a name="l00269"></a><span class="lineno">  269</span>&#160;<span class="comment">  Remarks:</span></div>
<div class="line"><a name="l00270"></a><span class="lineno">  270</span>&#160;<span class="comment">    Generally, GetMappingCylinder will not return the same</span></div>
<div class="line"><a name="l00271"></a><span class="lineno">  271</span>&#160;<span class="comment">    parameters passed to SetCylinderMapping.  However, the</span></div>
<div class="line"><a name="l00272"></a><span class="lineno">  272</span>&#160;<span class="comment">    location of the cylinder will be the same.  </span></div>
<div class="line"><a name="l00273"></a><span class="lineno">  273</span>&#160;<span class="comment">    If this mapping is not cylindrical, the cylinder will</span></div>
<div class="line"><a name="l00274"></a><span class="lineno">  274</span>&#160;<span class="comment">    approximate the actual mapping primitive.</span></div>
<div class="line"><a name="l00275"></a><span class="lineno">  275</span>&#160;<span class="comment">    */</span></div>
<div class="line"><a name="l00276"></a><span class="lineno">  276</span>&#160;    <span class="keywordtype">bool</span> GetMappingCylinder( </div>
<div class="line"><a name="l00277"></a><span class="lineno">  277</span>&#160;         <a class="code" href="class_o_n___cylinder.html">ON_Cylinder</a>&amp; cylinder</div>
<div class="line"><a name="l00278"></a><span class="lineno">  278</span>&#160;    ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00279"></a><span class="lineno">  279</span>&#160; </div>
<div class="line"><a name="l00280"></a><span class="lineno">  280</span>&#160;    <span class="comment">/*</span></div>
<div class="line"><a name="l00281"></a><span class="lineno">  281</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00282"></a><span class="lineno">  282</span>&#160;<span class="comment">      Get a spherical projection parameters from this texture mapping.</span></div>
<div class="line"><a name="l00283"></a><span class="lineno">  283</span>&#160;<span class="comment">    Parameters:</span></div>
<div class="line"><a name="l00284"></a><span class="lineno">  284</span>&#160;<span class="comment">      sphere - [out]  </span></div>
<div class="line"><a name="l00285"></a><span class="lineno">  285</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00286"></a><span class="lineno">  286</span>&#160;<span class="comment">      True if a valid sphere is returned.</span></div>
<div class="line"><a name="l00287"></a><span class="lineno">  287</span>&#160;<span class="comment">  Remarks:</span></div>
<div class="line"><a name="l00288"></a><span class="lineno">  288</span>&#160;<span class="comment">    Generally, GetMappingShere will not return the same</span></div>
<div class="line"><a name="l00289"></a><span class="lineno">  289</span>&#160;<span class="comment">    parameters passed to SetSphereMapping.  However, the</span></div>
<div class="line"><a name="l00290"></a><span class="lineno">  290</span>&#160;<span class="comment">    location of the sphere will be the same.</span></div>
<div class="line"><a name="l00291"></a><span class="lineno">  291</span>&#160;<span class="comment">    If this mapping is not cylindrical, the cylinder will</span></div>
<div class="line"><a name="l00292"></a><span class="lineno">  292</span>&#160;<span class="comment">    approximate the actual mapping primitive.</span></div>
<div class="line"><a name="l00293"></a><span class="lineno">  293</span>&#160;<span class="comment">    */</span></div>
<div class="line"><a name="l00294"></a><span class="lineno">  294</span>&#160;    <span class="keywordtype">bool</span> GetMappingSphere( </div>
<div class="line"><a name="l00295"></a><span class="lineno">  295</span>&#160;         <a class="code" href="class_o_n___sphere.html">ON_Sphere</a>&amp; sphere</div>
<div class="line"><a name="l00296"></a><span class="lineno">  296</span>&#160;    ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00297"></a><span class="lineno">  297</span>&#160; </div>
<div class="line"><a name="l00298"></a><span class="lineno">  298</span>&#160;    <span class="comment">/*</span></div>
<div class="line"><a name="l00299"></a><span class="lineno">  299</span>&#160;<span class="comment">    Get a box projection from the texture mapping.</span></div>
<div class="line"><a name="l00300"></a><span class="lineno">  300</span>&#160;<span class="comment">    Parameters:</span></div>
<div class="line"><a name="l00301"></a><span class="lineno">  301</span>&#160;<span class="comment">    plane - [out]  </span></div>
<div class="line"><a name="l00302"></a><span class="lineno">  302</span>&#160;<span class="comment">        The center of the box is at plane.origin and the sides</span></div>
<div class="line"><a name="l00303"></a><span class="lineno">  303</span>&#160;<span class="comment">        of the box are parallel to the plane&#39;s coordinate planes.</span></div>
<div class="line"><a name="l00304"></a><span class="lineno">  304</span>&#160;<span class="comment">    dx - [out]</span></div>
<div class="line"><a name="l00305"></a><span class="lineno">  305</span>&#160;<span class="comment">       The &quot;front&quot; and &quot;back&quot; sides of the box are in spanned</span></div>
<div class="line"><a name="l00306"></a><span class="lineno">  306</span>&#160;<span class="comment">       by the vectors plane.yaxis and plane.zaxis.  The back</span></div>
<div class="line"><a name="l00307"></a><span class="lineno">  307</span>&#160;<span class="comment">       plane contains the point plane.PointAt(dx[0],0,0) and</span></div>
<div class="line"><a name="l00308"></a><span class="lineno">  308</span>&#160;<span class="comment">       the front plane contains the point plane.PointAt(dx[1],0,0).</span></div>
<div class="line"><a name="l00309"></a><span class="lineno">  309</span>&#160;<span class="comment">    dy - [out]</span></div>
<div class="line"><a name="l00310"></a><span class="lineno">  310</span>&#160;<span class="comment">       The &quot;left&quot; and &quot;right&quot; sides of the box are in spanned</span></div>
<div class="line"><a name="l00311"></a><span class="lineno">  311</span>&#160;<span class="comment">       by the vectors plane.zaxis and plane.xaxis.  The left</span></div>
<div class="line"><a name="l00312"></a><span class="lineno">  312</span>&#160;<span class="comment">       plane contains the point plane.PointAt(0,dx[0],0) and</span></div>
<div class="line"><a name="l00313"></a><span class="lineno">  313</span>&#160;<span class="comment">       the back plane contains the point plane.PointAt(0,dy[1],0).</span></div>
<div class="line"><a name="l00314"></a><span class="lineno">  314</span>&#160;<span class="comment">    dz - [out] </span></div>
<div class="line"><a name="l00315"></a><span class="lineno">  315</span>&#160;<span class="comment">       The &quot;top&quot; and &quot;bottom&quot; sides of the box are in spanned</span></div>
<div class="line"><a name="l00316"></a><span class="lineno">  316</span>&#160;<span class="comment">       by the vectors plane.xaxis and plane.yaxis.  The bottom</span></div>
<div class="line"><a name="l00317"></a><span class="lineno">  317</span>&#160;<span class="comment">       plane contains the point plane.PointAt(0,0,dz[0]) and</span></div>
<div class="line"><a name="l00318"></a><span class="lineno">  318</span>&#160;<span class="comment">       the top plane contains the point plane.PointAt(0,0,dz[1]).</span></div>
<div class="line"><a name="l00319"></a><span class="lineno">  319</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00320"></a><span class="lineno">  320</span>&#160;<span class="comment">      True if a valid box is returned.</span></div>
<div class="line"><a name="l00321"></a><span class="lineno">  321</span>&#160;<span class="comment">  Remarks:</span></div>
<div class="line"><a name="l00322"></a><span class="lineno">  322</span>&#160;<span class="comment">    Generally, GetMappingBox will not return the same</span></div>
<div class="line"><a name="l00323"></a><span class="lineno">  323</span>&#160;<span class="comment">    parameters passed to SetBoxMapping.  However, the</span></div>
<div class="line"><a name="l00324"></a><span class="lineno">  324</span>&#160;<span class="comment">    location of the box will be the same.</span></div>
<div class="line"><a name="l00325"></a><span class="lineno">  325</span>&#160;<span class="comment">    */</span></div>
<div class="line"><a name="l00326"></a><span class="lineno">  326</span>&#160;    <span class="keywordtype">bool</span> GetMappingBox( </div>
<div class="line"><a name="l00327"></a><span class="lineno">  327</span>&#160;         <a class="code" href="class_o_n___plane.html">ON_Plane</a>&amp; plane,</div>
<div class="line"><a name="l00328"></a><span class="lineno">  328</span>&#160;         <a class="code" href="class_o_n___interval.html">ON_Interval</a>&amp; dx,</div>
<div class="line"><a name="l00329"></a><span class="lineno">  329</span>&#160;         <a class="code" href="class_o_n___interval.html">ON_Interval</a>&amp; dy,</div>
<div class="line"><a name="l00330"></a><span class="lineno">  330</span>&#160;         <a class="code" href="class_o_n___interval.html">ON_Interval</a>&amp; dz</div>
<div class="line"><a name="l00331"></a><span class="lineno">  331</span>&#160;    ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00332"></a><span class="lineno">  332</span>&#160; </div>
<div class="line"><a name="l00333"></a><span class="lineno">  333</span>&#160; </div>
<div class="line"><a name="l00334"></a><span class="lineno">  334</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00335"></a><span class="lineno">  335</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00336"></a><span class="lineno">  336</span>&#160;<span class="comment">    Reverses the texture in the specified direction.</span></div>
<div class="line"><a name="l00337"></a><span class="lineno">  337</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l00338"></a><span class="lineno">  338</span>&#160;<span class="comment">    dir - [in] 0 = reverse &quot;u&quot;, 1 = reverse &quot;v&quot;, 2 = reverse &quot;w&quot;.</span></div>
<div class="line"><a name="l00339"></a><span class="lineno">  339</span>&#160;<span class="comment">  Remarks:</span></div>
<div class="line"><a name="l00340"></a><span class="lineno">  340</span>&#160;<span class="comment">    Modies m_uvw so that the spedified direction transforms</span></div>
<div class="line"><a name="l00341"></a><span class="lineno">  341</span>&#160;<span class="comment">    the texture coordinate t to 1-t.</span></div>
<div class="line"><a name="l00342"></a><span class="lineno">  342</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00343"></a><span class="lineno">  343</span>&#160;<span class="comment">    True if input is valid.</span></div>
<div class="line"><a name="l00344"></a><span class="lineno">  344</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00345"></a><span class="lineno">  345</span>&#160;  <span class="keywordtype">bool</span> ReverseTextureCoordinate( <span class="keywordtype">int</span> dir );</div>
<div class="line"><a name="l00346"></a><span class="lineno">  346</span>&#160; </div>
<div class="line"><a name="l00347"></a><span class="lineno">  347</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00348"></a><span class="lineno">  348</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00349"></a><span class="lineno">  349</span>&#160;<span class="comment">    Swaps the specified texture coordinates.</span></div>
<div class="line"><a name="l00350"></a><span class="lineno">  350</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l00351"></a><span class="lineno">  351</span>&#160;<span class="comment">    i - [in]</span></div>
<div class="line"><a name="l00352"></a><span class="lineno">  352</span>&#160;<span class="comment">    j - [in]</span></div>
<div class="line"><a name="l00353"></a><span class="lineno">  353</span>&#160;<span class="comment">  Remarks:</span></div>
<div class="line"><a name="l00354"></a><span class="lineno">  354</span>&#160;<span class="comment">    Modifies m_uvw so that the specified texture coordinates are swapped.</span></div>
<div class="line"><a name="l00355"></a><span class="lineno">  355</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00356"></a><span class="lineno">  356</span>&#160;<span class="comment">    True if input is valid.</span></div>
<div class="line"><a name="l00357"></a><span class="lineno">  357</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00358"></a><span class="lineno">  358</span>&#160;  <span class="keywordtype">bool</span> SwapTextureCoordinate( <span class="keywordtype">int</span> i, <span class="keywordtype">int</span> j );</div>
<div class="line"><a name="l00359"></a><span class="lineno">  359</span>&#160; </div>
<div class="line"><a name="l00360"></a><span class="lineno">  360</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00361"></a><span class="lineno">  361</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00362"></a><span class="lineno">  362</span>&#160;<span class="comment">    Tiles the specified texture coordinates.</span></div>
<div class="line"><a name="l00363"></a><span class="lineno">  363</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l00364"></a><span class="lineno">  364</span>&#160;<span class="comment">    dir - [in] 0 =  &quot;u&quot;, 1 = &quot;v&quot;, 2 = &quot;w&quot;.</span></div>
<div class="line"><a name="l00365"></a><span class="lineno">  365</span>&#160;<span class="comment">    count - [in] number of tiles</span></div>
<div class="line"><a name="l00366"></a><span class="lineno">  366</span>&#160;<span class="comment">    offset - [in] offset of the tile</span></div>
<div class="line"><a name="l00367"></a><span class="lineno">  367</span>&#160;<span class="comment">  Remarks:</span></div>
<div class="line"><a name="l00368"></a><span class="lineno">  368</span>&#160;<span class="comment">    Modies m_uvw so that the specified texture coordinate is</span></div>
<div class="line"><a name="l00369"></a><span class="lineno">  369</span>&#160;<span class="comment">    tiled.</span></div>
<div class="line"><a name="l00370"></a><span class="lineno">  370</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00371"></a><span class="lineno">  371</span>&#160;<span class="comment">    True if input is valid.</span></div>
<div class="line"><a name="l00372"></a><span class="lineno">  372</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00373"></a><span class="lineno">  373</span>&#160;  <span class="keywordtype">bool</span> TileTextureCoordinate( <span class="keywordtype">int</span> dir, <span class="keywordtype">double</span> count, <span class="keywordtype">double</span> offset );</div>
<div class="line"><a name="l00374"></a><span class="lineno">  374</span>&#160; </div>
<div class="line"><a name="l00375"></a><span class="lineno">  375</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00376"></a><span class="lineno">  376</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00377"></a><span class="lineno">  377</span>&#160;<span class="comment">    Evaluate the mapping to get a texture coordinate.</span></div>
<div class="line"><a name="l00378"></a><span class="lineno">  378</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l00379"></a><span class="lineno">  379</span>&#160;<span class="comment">    P - [in] Vertex location</span></div>
<div class="line"><a name="l00380"></a><span class="lineno">  380</span>&#160;<span class="comment">    N - [in] If the mapping projection is ray_projection,</span></div>
<div class="line"><a name="l00381"></a><span class="lineno">  381</span>&#160;<span class="comment">             then this is the vertex unit normal.  Otherwise</span></div>
<div class="line"><a name="l00382"></a><span class="lineno">  382</span>&#160;<span class="comment">             N is ignored.</span></div>
<div class="line"><a name="l00383"></a><span class="lineno">  383</span>&#160;<span class="comment">    T - [out] Texture coordinate (u,v,w)</span></div>
<div class="line"><a name="l00384"></a><span class="lineno">  384</span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l00385"></a><span class="lineno">  385</span>&#160;<span class="comment">    P_xform -[in] </span></div>
<div class="line"><a name="l00386"></a><span class="lineno">  386</span>&#160;<span class="comment">      Transformation to be applied to P before performing</span></div>
<div class="line"><a name="l00387"></a><span class="lineno">  387</span>&#160;<span class="comment">      the mapping calculation.</span></div>
<div class="line"><a name="l00388"></a><span class="lineno">  388</span>&#160;<span class="comment">    N_xform - [in] </span></div>
<div class="line"><a name="l00389"></a><span class="lineno">  389</span>&#160;<span class="comment">      Transformation to be applied to N before performing</span></div>
<div class="line"><a name="l00390"></a><span class="lineno">  390</span>&#160;<span class="comment">      the mapping calculation.  One way to calculate N_xform</span></div>
<div class="line"><a name="l00391"></a><span class="lineno">  391</span>&#160;<span class="comment">      is to use the call P_xform::GetVectorTransform(N_xform).</span></div>
<div class="line"><a name="l00392"></a><span class="lineno">  392</span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l00393"></a><span class="lineno">  393</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00394"></a><span class="lineno">  394</span>&#160;<span class="comment">    Nonzero if evaluation is successful.  When the mapping</span></div>
<div class="line"><a name="l00395"></a><span class="lineno">  395</span>&#160;<span class="comment">    is a box or capped cylinder mapping, the value indicates </span></div>
<div class="line"><a name="l00396"></a><span class="lineno">  396</span>&#160;<span class="comment">    which side was evaluated.</span></div>
<div class="line"><a name="l00397"></a><span class="lineno">  397</span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l00398"></a><span class="lineno">  398</span>&#160;<span class="comment">      Cylinder mapping:</span></div>
<div class="line"><a name="l00399"></a><span class="lineno">  399</span>&#160;<span class="comment">        1 = cylinder wall, 2 = bottom cap, 3 = top cap</span></div>
<div class="line"><a name="l00400"></a><span class="lineno">  400</span>&#160;<span class="comment">      Box mapping:</span></div>
<div class="line"><a name="l00401"></a><span class="lineno">  401</span>&#160;<span class="comment">        1 = front</span></div>
<div class="line"><a name="l00402"></a><span class="lineno">  402</span>&#160;<span class="comment">        2 = right</span></div>
<div class="line"><a name="l00403"></a><span class="lineno">  403</span>&#160;<span class="comment">        3 = back</span></div>
<div class="line"><a name="l00404"></a><span class="lineno">  404</span>&#160;<span class="comment">        4 = left</span></div>
<div class="line"><a name="l00405"></a><span class="lineno">  405</span>&#160;<span class="comment">        5 = bottom</span></div>
<div class="line"><a name="l00406"></a><span class="lineno">  406</span>&#160;<span class="comment">        6 = top        </span></div>
<div class="line"><a name="l00407"></a><span class="lineno">  407</span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l00408"></a><span class="lineno">  408</span>&#160;<span class="comment">  See Also:</span></div>
<div class="line"><a name="l00409"></a><span class="lineno">  409</span>&#160;<span class="comment">    ON_TextureMapping::GetTextureCoordinates</span></div>
<div class="line"><a name="l00410"></a><span class="lineno">  410</span>&#160;<span class="comment">    ON_Mesh::SetTextureCoordinates</span></div>
<div class="line"><a name="l00411"></a><span class="lineno">  411</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00412"></a><span class="lineno">  412</span>&#160;  <span class="keyword">virtual</span></div>
<div class="line"><a name="l00413"></a><span class="lineno">  413</span>&#160;  <span class="keywordtype">int</span> Evaluate( </div>
<div class="line"><a name="l00414"></a><span class="lineno">  414</span>&#160;    <span class="keyword">const</span> <a class="code" href="class_o_n__3d_point.html">ON_3dPoint</a>&amp; P,</div>
<div class="line"><a name="l00415"></a><span class="lineno">  415</span>&#160;    <span class="keyword">const</span> <a class="code" href="class_o_n__3d_vector.html">ON_3dVector</a>&amp; N,</div>
<div class="line"><a name="l00416"></a><span class="lineno">  416</span>&#160;    <a class="code" href="class_o_n__3d_point.html">ON_3dPoint</a>* T</div>
<div class="line"><a name="l00417"></a><span class="lineno">  417</span>&#160;    ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00418"></a><span class="lineno">  418</span>&#160; </div>
<div class="line"><a name="l00419"></a><span class="lineno">  419</span>&#160;  <span class="keyword">virtual</span></div>
<div class="line"><a name="l00420"></a><span class="lineno">  420</span>&#160;  <span class="keywordtype">int</span> Evaluate( </div>
<div class="line"><a name="l00421"></a><span class="lineno">  421</span>&#160;    <span class="keyword">const</span> <a class="code" href="class_o_n__3d_point.html">ON_3dPoint</a>&amp; P,</div>
<div class="line"><a name="l00422"></a><span class="lineno">  422</span>&#160;    <span class="keyword">const</span> <a class="code" href="class_o_n__3d_vector.html">ON_3dVector</a>&amp; N,</div>
<div class="line"><a name="l00423"></a><span class="lineno">  423</span>&#160;    <a class="code" href="class_o_n__3d_point.html">ON_3dPoint</a>* T,</div>
<div class="line"><a name="l00424"></a><span class="lineno">  424</span>&#160;      <span class="keyword">const</span> <a class="code" href="class_o_n___xform.html">ON_Xform</a>&amp; P_xform,</div>
<div class="line"><a name="l00425"></a><span class="lineno">  425</span>&#160;    <span class="keyword">const</span> <a class="code" href="class_o_n___xform.html">ON_Xform</a>&amp; N_xform</div>
<div class="line"><a name="l00426"></a><span class="lineno">  426</span>&#160;    ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00427"></a><span class="lineno">  427</span>&#160; </div>
<div class="line"><a name="l00428"></a><span class="lineno">  428</span>&#160;  <span class="keywordtype">int</span> EvaluatePlaneMapping( </div>
<div class="line"><a name="l00429"></a><span class="lineno">  429</span>&#160;    <span class="keyword">const</span> <a class="code" href="class_o_n__3d_point.html">ON_3dPoint</a>&amp; P,</div>
<div class="line"><a name="l00430"></a><span class="lineno">  430</span>&#160;    <span class="keyword">const</span> <a class="code" href="class_o_n__3d_vector.html">ON_3dVector</a>&amp; N,</div>
<div class="line"><a name="l00431"></a><span class="lineno">  431</span>&#160;    <a class="code" href="class_o_n__3d_point.html">ON_3dPoint</a>* T</div>
<div class="line"><a name="l00432"></a><span class="lineno">  432</span>&#160;    ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00433"></a><span class="lineno">  433</span>&#160; </div>
<div class="line"><a name="l00434"></a><span class="lineno">  434</span>&#160;  <span class="keywordtype">int</span> EvaluateSphereMapping( </div>
<div class="line"><a name="l00435"></a><span class="lineno">  435</span>&#160;    <span class="keyword">const</span> <a class="code" href="class_o_n__3d_point.html">ON_3dPoint</a>&amp; P,</div>
<div class="line"><a name="l00436"></a><span class="lineno">  436</span>&#160;    <span class="keyword">const</span> <a class="code" href="class_o_n__3d_vector.html">ON_3dVector</a>&amp; N,</div>
<div class="line"><a name="l00437"></a><span class="lineno">  437</span>&#160;    <a class="code" href="class_o_n__3d_point.html">ON_3dPoint</a>* T</div>
<div class="line"><a name="l00438"></a><span class="lineno">  438</span>&#160;    ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00439"></a><span class="lineno">  439</span>&#160; </div>
<div class="line"><a name="l00440"></a><span class="lineno">  440</span>&#160;  <span class="keywordtype">int</span> EvaluateCylinderMapping( </div>
<div class="line"><a name="l00441"></a><span class="lineno">  441</span>&#160;    <span class="keyword">const</span> <a class="code" href="class_o_n__3d_point.html">ON_3dPoint</a>&amp; P,</div>
<div class="line"><a name="l00442"></a><span class="lineno">  442</span>&#160;    <span class="keyword">const</span> <a class="code" href="class_o_n__3d_vector.html">ON_3dVector</a>&amp; N,</div>
<div class="line"><a name="l00443"></a><span class="lineno">  443</span>&#160;    <a class="code" href="class_o_n__3d_point.html">ON_3dPoint</a>* T</div>
<div class="line"><a name="l00444"></a><span class="lineno">  444</span>&#160;    ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00445"></a><span class="lineno">  445</span>&#160; </div>
<div class="line"><a name="l00446"></a><span class="lineno">  446</span>&#160;  <span class="keywordtype">int</span> EvaluateBoxMapping( </div>
<div class="line"><a name="l00447"></a><span class="lineno">  447</span>&#160;    <span class="keyword">const</span> <a class="code" href="class_o_n__3d_point.html">ON_3dPoint</a>&amp; P,</div>
<div class="line"><a name="l00448"></a><span class="lineno">  448</span>&#160;    <span class="keyword">const</span> <a class="code" href="class_o_n__3d_vector.html">ON_3dVector</a>&amp; N,</div>
<div class="line"><a name="l00449"></a><span class="lineno">  449</span>&#160;    <a class="code" href="class_o_n__3d_point.html">ON_3dPoint</a>* T</div>
<div class="line"><a name="l00450"></a><span class="lineno">  450</span>&#160;    ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00451"></a><span class="lineno">  451</span>&#160; </div>
<div class="line"><a name="l00452"></a><span class="lineno">  452</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00453"></a><span class="lineno">  453</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00454"></a><span class="lineno">  454</span>&#160;<span class="comment">    Quickly check to see if a mesh or tag has texture coordinates</span></div>
<div class="line"><a name="l00455"></a><span class="lineno">  455</span>&#160;<span class="comment">    set by this mapping.</span></div>
<div class="line"><a name="l00456"></a><span class="lineno">  456</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l00457"></a><span class="lineno">  457</span>&#160;<span class="comment">    mesh - [in]</span></div>
<div class="line"><a name="l00458"></a><span class="lineno">  458</span>&#160;<span class="comment">    tag - [in]</span></div>
<div class="line"><a name="l00459"></a><span class="lineno">  459</span>&#160;<span class="comment">    object_xform - [in] (optional)</span></div>
<div class="line"><a name="l00460"></a><span class="lineno">  460</span>&#160;<span class="comment">      If this transform is not NULL, then true will be</span></div>
<div class="line"><a name="l00461"></a><span class="lineno">  461</span>&#160;<span class="comment">      returned only if the mapping function is the same and</span></div>
<div class="line"><a name="l00462"></a><span class="lineno">  462</span>&#160;<span class="comment">      the tag&#39;s m_mesh_xform field is the same as mesh_xform.</span></div>
<div class="line"><a name="l00463"></a><span class="lineno">  463</span>&#160;<span class="comment">      This parameter is typically NULL or the value of </span></div>
<div class="line"><a name="l00464"></a><span class="lineno">  464</span>&#160;<span class="comment">      ON_MappingRef::m_object_xform.</span></div>
<div class="line"><a name="l00465"></a><span class="lineno">  465</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00466"></a><span class="lineno">  466</span>&#160;<span class="comment">    True if the meshes texture coordinates were set by this</span></div>
<div class="line"><a name="l00467"></a><span class="lineno">  467</span>&#160;<span class="comment">    mapping.</span></div>
<div class="line"><a name="l00468"></a><span class="lineno">  468</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00469"></a><span class="lineno">  469</span>&#160;  <span class="keywordtype">bool</span> HasMatchingTextureCoordinates( </div>
<div class="line"><a name="l00470"></a><span class="lineno">  470</span>&#160;         <span class="keyword">const</span> <a class="code" href="class_o_n___mesh.html">ON_Mesh</a>&amp; mesh,</div>
<div class="line"><a name="l00471"></a><span class="lineno">  471</span>&#160;         <span class="keyword">const</span> <a class="code" href="class_o_n___xform.html">ON_Xform</a>* object_xform = 0</div>
<div class="line"><a name="l00472"></a><span class="lineno">  472</span>&#160;         ) <span class="keyword">const</span>; </div>
<div class="line"><a name="l00473"></a><span class="lineno">  473</span>&#160;  <span class="keywordtype">bool</span> HasMatchingTextureCoordinates( </div>
<div class="line"><a name="l00474"></a><span class="lineno">  474</span>&#160;         <span class="keyword">const</span> <span class="keyword">class</span> <a class="code" href="class_o_n___mapping_tag.html">ON_MappingTag</a>&amp; tag,</div>
<div class="line"><a name="l00475"></a><span class="lineno">  475</span>&#160;         <span class="keyword">const</span> <a class="code" href="class_o_n___xform.html">ON_Xform</a>* object_xform = 0</div>
<div class="line"><a name="l00476"></a><span class="lineno">  476</span>&#160;         ) <span class="keyword">const</span>; </div>
<div class="line"><a name="l00477"></a><span class="lineno">  477</span>&#160; </div>
<div class="line"><a name="l00478"></a><span class="lineno">  478</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00479"></a><span class="lineno">  479</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00480"></a><span class="lineno">  480</span>&#160;<span class="comment">    Get texture coordinates.  This calculation is</span></div>
<div class="line"><a name="l00481"></a><span class="lineno">  481</span>&#160;<span class="comment">    expensive.  When possible, use a MappingMatch()</span></div>
<div class="line"><a name="l00482"></a><span class="lineno">  482</span>&#160;<span class="comment">    query to avoid unnecessary calculations.</span></div>
<div class="line"><a name="l00483"></a><span class="lineno">  483</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l00484"></a><span class="lineno">  484</span>&#160;<span class="comment">    mesh - [in]</span></div>
<div class="line"><a name="l00485"></a><span class="lineno">  485</span>&#160;<span class="comment">    T - [out] Texture coordinates returned here.</span></div>
<div class="line"><a name="l00486"></a><span class="lineno">  486</span>&#160;<span class="comment">    mesh_xform - [in] (optional)</span></div>
<div class="line"><a name="l00487"></a><span class="lineno">  487</span>&#160;<span class="comment">      If the mesh has been transformed since the texture mapping was set </span></div>
<div class="line"><a name="l00488"></a><span class="lineno">  488</span>&#160;<span class="comment">      up, pass the transformation here.  Typically this is the value</span></div>
<div class="line"><a name="l00489"></a><span class="lineno">  489</span>&#160;<span class="comment">      of ON_Mesh::m_mapping_xform or ON_MappingRef::m_object_xform</span></div>
<div class="line"><a name="l00490"></a><span class="lineno">  490</span>&#160;<span class="comment">    bLazy - [in]</span></div>
<div class="line"><a name="l00491"></a><span class="lineno">  491</span>&#160;<span class="comment">      If true and the mesh.m_T[] values were calculated using</span></div>
<div class="line"><a name="l00492"></a><span class="lineno">  492</span>&#160;<span class="comment">      this mapping, they are simply copied to the T[] array</span></div>
<div class="line"><a name="l00493"></a><span class="lineno">  493</span>&#160;<span class="comment">      and no calculations are performed.  If you are calling</span></div>
<div class="line"><a name="l00494"></a><span class="lineno">  494</span>&#160;<span class="comment">      the 3d point version and you care about the z-coordinate,</span></div>
<div class="line"><a name="l00495"></a><span class="lineno">  495</span>&#160;<span class="comment">      then do not use the lazy option (meshes only store</span></div>
<div class="line"><a name="l00496"></a><span class="lineno">  496</span>&#160;<span class="comment">      2d texture coordinates).</span></div>
<div class="line"><a name="l00497"></a><span class="lineno">  497</span>&#160;<span class="comment">    Tside - [out]</span></div>
<div class="line"><a name="l00498"></a><span class="lineno">  498</span>&#160;<span class="comment">      In the case of divided textures, side information is returned</span></div>
<div class="line"><a name="l00499"></a><span class="lineno">  499</span>&#160;<span class="comment">      here if a lazy mapping is not done.  Otherwise Tside-&gt;Count()</span></div>
<div class="line"><a name="l00500"></a><span class="lineno">  500</span>&#160;<span class="comment">      will be zero.</span></div>
<div class="line"><a name="l00501"></a><span class="lineno">  501</span>&#160;<span class="comment">      Cylinder mapping:</span></div>
<div class="line"><a name="l00502"></a><span class="lineno">  502</span>&#160;<span class="comment">        1 = cylinder wall, 2 = bottom cap, 3 = top cap</span></div>
<div class="line"><a name="l00503"></a><span class="lineno">  503</span>&#160;<span class="comment">      Box mapping:</span></div>
<div class="line"><a name="l00504"></a><span class="lineno">  504</span>&#160;<span class="comment">        1 = front</span></div>
<div class="line"><a name="l00505"></a><span class="lineno">  505</span>&#160;<span class="comment">        2 = right</span></div>
<div class="line"><a name="l00506"></a><span class="lineno">  506</span>&#160;<span class="comment">        3 = back</span></div>
<div class="line"><a name="l00507"></a><span class="lineno">  507</span>&#160;<span class="comment">        4 = left</span></div>
<div class="line"><a name="l00508"></a><span class="lineno">  508</span>&#160;<span class="comment">        5 = bottom</span></div>
<div class="line"><a name="l00509"></a><span class="lineno">  509</span>&#160;<span class="comment">        6 = top        </span></div>
<div class="line"><a name="l00510"></a><span class="lineno">  510</span>&#160;<span class="comment">  Example:</span></div>
<div class="line"><a name="l00511"></a><span class="lineno">  511</span>&#160;<span class="comment">    </span></div>
<div class="line"><a name="l00512"></a><span class="lineno">  512</span>&#160;<span class="comment">          ON_TextureMapping mapping = ...;</span></div>
<div class="line"><a name="l00513"></a><span class="lineno">  513</span>&#160;<span class="comment">          const ON_Mesh* mesh = ...;</span></div>
<div class="line"><a name="l00514"></a><span class="lineno">  514</span>&#160;<span class="comment">          bool bLazy = true;</span></div>
<div class="line"><a name="l00515"></a><span class="lineno">  515</span>&#160;<span class="comment">          ON_SimpleArray&lt;ON_3dPoint&gt; T(mesh-&gt;VertexCount());</span></div>
<div class="line"><a name="l00516"></a><span class="lineno">  516</span>&#160;<span class="comment">          T.SetCount(mesh-&gt;m_VertexCount());</span></div>
<div class="line"><a name="l00517"></a><span class="lineno">  517</span>&#160;<span class="comment">          if ( !mapping.GetTextureCoordinates(mesh,3,3,&amp;T[0].x,bLazy) )</span></div>
<div class="line"><a name="l00518"></a><span class="lineno">  518</span>&#160;<span class="comment">            T.SetCount(0).</span></div>
<div class="line"><a name="l00519"></a><span class="lineno">  519</span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l00520"></a><span class="lineno">  520</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00521"></a><span class="lineno">  521</span>&#160;<span class="comment">    True if successful.</span></div>
<div class="line"><a name="l00522"></a><span class="lineno">  522</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00523"></a><span class="lineno">  523</span>&#160;  <span class="keywordtype">bool</span> GetTextureCoordinates( </div>
<div class="line"><a name="l00524"></a><span class="lineno">  524</span>&#160;    <span class="keyword">const</span> <a class="code" href="class_o_n___mesh.html">ON_Mesh</a>&amp; mesh, </div>
<div class="line"><a name="l00525"></a><span class="lineno">  525</span>&#160;    <a class="code" href="class_o_n___simple_array.html">ON_SimpleArray&lt;ON_3fPoint&gt;</a>&amp; T,</div>
<div class="line"><a name="l00526"></a><span class="lineno">  526</span>&#160;        <span class="keyword">const</span> <a class="code" href="class_o_n___xform.html">ON_Xform</a>* mesh_xform = 0,</div>
<div class="line"><a name="l00527"></a><span class="lineno">  527</span>&#160;    <span class="keywordtype">bool</span> bLazy = <span class="keyword">false</span>,</div>
<div class="line"><a name="l00528"></a><span class="lineno">  528</span>&#160;    <a class="code" href="class_o_n___simple_array.html">ON_SimpleArray&lt;int&gt;</a>* Tside = 0</div>
<div class="line"><a name="l00529"></a><span class="lineno">  529</span>&#160;    ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00530"></a><span class="lineno">  530</span>&#160; </div>
<div class="line"><a name="l00531"></a><span class="lineno">  531</span>&#160;  <span class="keywordtype">bool</span> GetTextureCoordinates( </div>
<div class="line"><a name="l00532"></a><span class="lineno">  532</span>&#160;    <span class="keyword">const</span> <a class="code" href="class_o_n___mesh.html">ON_Mesh</a>&amp; mesh, </div>
<div class="line"><a name="l00533"></a><span class="lineno">  533</span>&#160;    <a class="code" href="class_o_n___simple_array.html">ON_SimpleArray&lt;ON_2fPoint&gt;</a>&amp; T,</div>
<div class="line"><a name="l00534"></a><span class="lineno">  534</span>&#160;        <span class="keyword">const</span> <a class="code" href="class_o_n___xform.html">ON_Xform</a>* mesh_xform = 0,</div>
<div class="line"><a name="l00535"></a><span class="lineno">  535</span>&#160;    <span class="keywordtype">bool</span> bLazy = <span class="keyword">false</span>,</div>
<div class="line"><a name="l00536"></a><span class="lineno">  536</span>&#160;    <a class="code" href="class_o_n___simple_array.html">ON_SimpleArray&lt;int&gt;</a>* Tside = 0</div>
<div class="line"><a name="l00537"></a><span class="lineno">  537</span>&#160;    ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00538"></a><span class="lineno">  538</span>&#160; </div>
<div class="line"><a name="l00539"></a><span class="lineno">  539</span>&#160;<span class="keyword">public</span>:</div>
<div class="line"><a name="l00540"></a><span class="lineno">  540</span>&#160;  <span class="comment">// The only reliable and persistent way to reference texture </span></div>
<div class="line"><a name="l00541"></a><span class="lineno">  541</span>&#160;  <span class="comment">// mappings is by the mapping_id.  If the mapping id is</span></div>
<div class="line"><a name="l00542"></a><span class="lineno">  542</span>&#160;  <span class="comment">// set to m_srfp_mapping_id, then all other mapping settings</span></div>
<div class="line"><a name="l00543"></a><span class="lineno">  543</span>&#160;  <span class="comment">// are ignored.</span></div>
<div class="line"><a name="l00544"></a><span class="lineno">  544</span>&#160;  <a class="code" href="class_o_n___u_u_i_d.html">ON_UUID</a> m_mapping_id;</div>
<div class="line"><a name="l00545"></a><span class="lineno">  545</span>&#160; </div>
<div class="line"><a name="l00546"></a><span class="lineno">  546</span>&#160;  <span class="comment">// Runtime texture mapping table index. </span></div>
<div class="line"><a name="l00547"></a><span class="lineno">  547</span>&#160;  <span class="comment">// This value is NOT SAVED IN 3DM FILES.</span></div>
<div class="line"><a name="l00548"></a><span class="lineno">  548</span>&#160;  <span class="comment">// This value is constant for each runtime instance of Rhino,</span></div>
<div class="line"><a name="l00549"></a><span class="lineno">  549</span>&#160;  <span class="comment">// but can change each time a model is loaded or saved.  </span></div>
<div class="line"><a name="l00550"></a><span class="lineno">  550</span>&#160;  <span class="comment">// Once a texture mapping is in the CRhinoDoc material table,</span></div>
<div class="line"><a name="l00551"></a><span class="lineno">  551</span>&#160;  <span class="comment">// its id and index never change in that instance of Rhino.</span></div>
<div class="line"><a name="l00552"></a><span class="lineno">  552</span>&#160;  <span class="keywordtype">int</span> m_mapping_index;</div>
<div class="line"><a name="l00553"></a><span class="lineno">  553</span>&#160; </div>
<div class="line"><a name="l00554"></a><span class="lineno">  554</span>&#160;  <span class="comment">// The texture mapping name is for UI and user comfort. </span></div>
<div class="line"><a name="l00555"></a><span class="lineno">  555</span>&#160;  <span class="comment">// Duplicates are permitted.</span></div>
<div class="line"><a name="l00556"></a><span class="lineno">  556</span>&#160;  <a class="code" href="class_o_n__w_string.html">ON_wString</a> m_mapping_name;</div>
<div class="line"><a name="l00557"></a><span class="lineno">  557</span>&#160; </div>
<div class="line"><a name="l00559"></a><span class="lineno">  559</span>&#160;  <span class="comment">//</span></div>
<div class="line"><a name="l00560"></a><span class="lineno">  560</span>&#160;  <span class="comment">// Mapping types:</span></div>
<div class="line"><a name="l00561"></a><span class="lineno">  561</span>&#160;  <span class="comment">//</span></div>
<div class="line"><a name="l00562"></a><span class="lineno">  562</span>&#160;  <span class="comment">//   You can either calculate texture coordinates based on</span></div>
<div class="line"><a name="l00563"></a><span class="lineno">  563</span>&#160;  <span class="comment">//   the parameterization of the surface used to create a mesh,</span></div>
<div class="line"><a name="l00564"></a><span class="lineno">  564</span>&#160;  <span class="comment">//   or project the natural parameterization from a mapping</span></div>
<div class="line"><a name="l00565"></a><span class="lineno">  565</span>&#160;  <span class="comment">//   primitive, like a plane, sphere, box, or cylinder.</span></div>
<div class="line"><a name="l00566"></a><span class="lineno">  566</span>&#160;  <span class="comment">//</span></div>
<div class="line"><a name="l00567"></a><span class="lineno">  567</span>&#160;    <span class="comment">// Do not change TYPE enum values - they are saved in 3dm files.</span></div>
<div class="line"><a name="l00568"></a><span class="lineno">  568</span>&#160;  <span class="comment">//</span></div>
<div class="line"><a name="l00569"></a><span class="lineno">  569</span>&#160;  <span class="keyword">enum</span> TYPE</div>
<div class="line"><a name="l00570"></a><span class="lineno">  570</span>&#160;  {</div>
<div class="line"><a name="l00571"></a><span class="lineno">  571</span>&#160;    no_mapping       = 0,</div>
<div class="line"><a name="l00572"></a><span class="lineno">  572</span>&#160; </div>
<div class="line"><a name="l00573"></a><span class="lineno">  573</span>&#160;    srfp_mapping     = 1, <span class="comment">// u,v = linear transform of surface params,w = 0</span></div>
<div class="line"><a name="l00574"></a><span class="lineno">  574</span>&#160;    plane_mapping    = 2, <span class="comment">// u,v,w = 3d coordinates wrt frame</span></div>
<div class="line"><a name="l00575"></a><span class="lineno">  575</span>&#160;    cylinder_mapping = 3, <span class="comment">// u,v,w = logitude, height, radius</span></div>
<div class="line"><a name="l00576"></a><span class="lineno">  576</span>&#160;    sphere_mapping   = 4, <span class="comment">// (u,v,w) = longitude,latitude,radius</span></div>
<div class="line"><a name="l00577"></a><span class="lineno">  577</span>&#160;    box_mapping      = 5,</div>
<div class="line"><a name="l00578"></a><span class="lineno">  578</span>&#160;    mesh_mapping_primitive = 6, <span class="comment">// m_mapping_primitive is an ON_Mesh </span></div>
<div class="line"><a name="l00579"></a><span class="lineno">  579</span>&#160;    srf_mapping_primitive  = 7, <span class="comment">// m_mapping_primitive is an ON_Surface</span></div>
<div class="line"><a name="l00580"></a><span class="lineno">  580</span>&#160;    brep_mapping_primitive = 8, <span class="comment">// m_mapping_primitive is an ON_Brep</span></div>
<div class="line"><a name="l00581"></a><span class="lineno">  581</span>&#160; </div>
<div class="line"><a name="l00582"></a><span class="lineno">  582</span>&#160;    force_32bit_mapping_type = 0xFFFFFFFF</div>
<div class="line"><a name="l00583"></a><span class="lineno">  583</span>&#160;  };</div>
<div class="line"><a name="l00584"></a><span class="lineno">  584</span>&#160; </div>
<div class="line"><a name="l00585"></a><span class="lineno">  585</span>&#160;    TYPE m_type;</div>
<div class="line"><a name="l00586"></a><span class="lineno">  586</span>&#160; </div>
<div class="line"><a name="l00588"></a><span class="lineno">  588</span>&#160;  <span class="comment">//</span></div>
<div class="line"><a name="l00589"></a><span class="lineno">  589</span>&#160;  <span class="comment">// Projection:</span></div>
<div class="line"><a name="l00590"></a><span class="lineno">  590</span>&#160;  <span class="comment">//</span></div>
<div class="line"><a name="l00591"></a><span class="lineno">  591</span>&#160;  <span class="comment">//   When a mapping primitive, like a plane, sphere, box,</span></div>
<div class="line"><a name="l00592"></a><span class="lineno">  592</span>&#160;  <span class="comment">//   or cylinder, is used, there are two projection options.</span></div>
<div class="line"><a name="l00593"></a><span class="lineno">  593</span>&#160;  <span class="comment">//</span></div>
<div class="line"><a name="l00594"></a><span class="lineno">  594</span>&#160;  <span class="comment">//  clspt_projection: world xyz maps to the point on the </span></div>
<div class="line"><a name="l00595"></a><span class="lineno">  595</span>&#160;  <span class="comment">//                    mapping primitive that is closest to xyz.</span></div>
<div class="line"><a name="l00596"></a><span class="lineno">  596</span>&#160;  <span class="comment">//                    In this case, ON_TextureMapping::Evaluate</span></div>
<div class="line"><a name="l00597"></a><span class="lineno">  597</span>&#160;  <span class="comment">//                    ignores the vector argument.</span></div>
<div class="line"><a name="l00598"></a><span class="lineno">  598</span>&#160;  <span class="comment">//</span></div>
<div class="line"><a name="l00599"></a><span class="lineno">  599</span>&#160;  <span class="comment">//  ray_projection:   world xyz + world vector defines a world line.</span></div>
<div class="line"><a name="l00600"></a><span class="lineno">  600</span>&#160;  <span class="comment">//                    The world line is intersected with the mapping </span></div>
<div class="line"><a name="l00601"></a><span class="lineno">  601</span>&#160;  <span class="comment">//                    primitive and the intersection point that is</span></div>
<div class="line"><a name="l00602"></a><span class="lineno">  602</span>&#160;  <span class="comment">//                    closest to the world xyz point is used to</span></div>
<div class="line"><a name="l00603"></a><span class="lineno">  603</span>&#160;  <span class="comment">//                    calculate the mapping parameters.</span></div>
<div class="line"><a name="l00604"></a><span class="lineno">  604</span>&#160;  <span class="comment">//</span></div>
<div class="line"><a name="l00605"></a><span class="lineno">  605</span>&#160;  <span class="comment">//  The value of m_projection can be changed as needed.</span></div>
<div class="line"><a name="l00606"></a><span class="lineno">  606</span>&#160;  <span class="comment">//</span></div>
<div class="line"><a name="l00607"></a><span class="lineno">  607</span>&#160;  <span class="comment">//  If m_type = srfp_mapping, then m_projection is ignored.</span></div>
<div class="line"><a name="l00608"></a><span class="lineno">  608</span>&#160;  <span class="comment">//</span></div>
<div class="line"><a name="l00609"></a><span class="lineno">  609</span>&#160;  <span class="keyword">enum</span> PROJECTION</div>
<div class="line"><a name="l00610"></a><span class="lineno">  610</span>&#160;  {</div>
<div class="line"><a name="l00611"></a><span class="lineno">  611</span>&#160;    no_projection    = 0,</div>
<div class="line"><a name="l00612"></a><span class="lineno">  612</span>&#160;    clspt_projection = 1,</div>
<div class="line"><a name="l00613"></a><span class="lineno">  613</span>&#160;    ray_projection   = 2,</div>
<div class="line"><a name="l00614"></a><span class="lineno">  614</span>&#160;    force_32bit_mapping_projection = 0xFFFFFFFF</div>
<div class="line"><a name="l00615"></a><span class="lineno">  615</span>&#160;  };</div>
<div class="line"><a name="l00616"></a><span class="lineno">  616</span>&#160; </div>
<div class="line"><a name="l00617"></a><span class="lineno">  617</span>&#160;  PROJECTION m_projection;</div>
<div class="line"><a name="l00618"></a><span class="lineno">  618</span>&#160; </div>
<div class="line"><a name="l00620"></a><span class="lineno">  620</span>&#160;  <span class="comment">//</span></div>
<div class="line"><a name="l00621"></a><span class="lineno">  621</span>&#160;  <span class="comment">// Texture space</span></div>
<div class="line"><a name="l00622"></a><span class="lineno">  622</span>&#160;  <span class="comment">//</span></div>
<div class="line"><a name="l00623"></a><span class="lineno">  623</span>&#160;  <span class="comment">//   When a mapping primitive is a box or a capped cylinder,</span></div>
<div class="line"><a name="l00624"></a><span class="lineno">  624</span>&#160;  <span class="comment">//   there are two options for the mapping.  Either the sides</span></div>
<div class="line"><a name="l00625"></a><span class="lineno">  625</span>&#160;  <span class="comment">//   all map to (0,1)x(0,1) (so the either texture map appears </span></div>
<div class="line"><a name="l00626"></a><span class="lineno">  626</span>&#160;  <span class="comment">//   on each side, or the sides map to distinct regions of the</span></div>
<div class="line"><a name="l00627"></a><span class="lineno">  627</span>&#160;  <span class="comment">//   texture space.  </span></div>
<div class="line"><a name="l00628"></a><span class="lineno">  628</span>&#160;  <span class="comment">//   </span></div>
<div class="line"><a name="l00629"></a><span class="lineno">  629</span>&#160;  <span class="keyword">enum</span> TEXTURE_SPACE</div>
<div class="line"><a name="l00630"></a><span class="lineno">  630</span>&#160;  {</div>
<div class="line"><a name="l00631"></a><span class="lineno">  631</span>&#160;    single  = 0, <span class="comment">// sides and caps map to same texture space</span></div>
<div class="line"><a name="l00632"></a><span class="lineno">  632</span>&#160;    divided = 1, <span class="comment">// sides and caps map to distinct vertical</span></div>
<div class="line"><a name="l00633"></a><span class="lineno">  633</span>&#160;                 <span class="comment">// regions of texture space.</span></div>
<div class="line"><a name="l00634"></a><span class="lineno">  634</span>&#160;                 <span class="comment">// (0, 1/4, 2/4, 3/4, 1) for uncapped boxes.</span></div>
<div class="line"><a name="l00635"></a><span class="lineno">  635</span>&#160;                 <span class="comment">// (0, 1/6, 2/6, 3/6, 4/6, 5/6, 1) for capped boxes.</span></div>
<div class="line"><a name="l00636"></a><span class="lineno">  636</span>&#160;                 <span class="comment">// (0, 4/6, 5/6, 1) for capped cylinders.</span></div>
<div class="line"><a name="l00637"></a><span class="lineno">  637</span>&#160;    force_32bit_texture_space = 0xFFFFFFFF</div>
<div class="line"><a name="l00638"></a><span class="lineno">  638</span>&#160;  };</div>
<div class="line"><a name="l00639"></a><span class="lineno">  639</span>&#160;  </div>
<div class="line"><a name="l00640"></a><span class="lineno">  640</span>&#160;  TEXTURE_SPACE m_texture_space;</div>
<div class="line"><a name="l00641"></a><span class="lineno">  641</span>&#160; </div>
<div class="line"><a name="l00642"></a><span class="lineno">  642</span>&#160;  <span class="comment">// The m_bCapped applies to planar, cylinder and box mappings.</span></div>
<div class="line"><a name="l00643"></a><span class="lineno">  643</span>&#160;  <span class="comment">// If m_bCapped is false, the cylinder or box is &quot;infinite&quot;, if m_bCapped is true, they are finite.</span></div>
<div class="line"><a name="l00644"></a><span class="lineno">  644</span>&#160;  <span class="comment">// In planar mappings, m_bCapped=false means &quot;the Z texture coordinate will always be 0.0&quot;</span></div>
<div class="line"><a name="l00645"></a><span class="lineno">  645</span>&#160;  <span class="comment">// this is now the default behaviour in Rhino 5.0 - it&#39;s what users expect apparently.</span></div>
<div class="line"><a name="l00646"></a><span class="lineno">  646</span>&#160;  <span class="keywordtype">bool</span> m_bCapped;</div>
<div class="line"><a name="l00647"></a><span class="lineno">  647</span>&#160; </div>
<div class="line"><a name="l00649"></a><span class="lineno">  649</span>&#160;  <span class="comment">//</span></div>
<div class="line"><a name="l00650"></a><span class="lineno">  650</span>&#160;  <span class="comment">// For primitive based mappings, these transformations are</span></div>
<div class="line"><a name="l00651"></a><span class="lineno">  651</span>&#160;  <span class="comment">// used to map the world coordinate (x,y,z) point P and </span></div>
<div class="line"><a name="l00652"></a><span class="lineno">  652</span>&#160;  <span class="comment">// surface normal N before it is projected to the normalized </span></div>
<div class="line"><a name="l00653"></a><span class="lineno">  653</span>&#160;  <span class="comment">// mapping primitive. The surface normal transformation,</span></div>
<div class="line"><a name="l00654"></a><span class="lineno">  654</span>&#160;  <span class="comment">// m_Nxyz, is always calculated from m_Pxyz.  It is a </span></div>
<div class="line"><a name="l00655"></a><span class="lineno">  655</span>&#160;  <span class="comment">// runtime setting that is not saved in 3dm files. </span></div>
<div class="line"><a name="l00656"></a><span class="lineno">  656</span>&#160;  <span class="comment">// If m_type is srfp_mapping, then m_Pxyz and m_Nxyz are</span></div>
<div class="line"><a name="l00657"></a><span class="lineno">  657</span>&#160;  <span class="comment">// ignored.</span></div>
<div class="line"><a name="l00658"></a><span class="lineno">  658</span>&#160;  <a class="code" href="class_o_n___xform.html">ON_Xform</a> m_Pxyz;</div>
<div class="line"><a name="l00659"></a><span class="lineno">  659</span>&#160;  <a class="code" href="class_o_n___xform.html">ON_Xform</a> m_Nxyz;</div>
<div class="line"><a name="l00660"></a><span class="lineno">  660</span>&#160; </div>
<div class="line"><a name="l00661"></a><span class="lineno">  661</span>&#160;  <span class="comment">// Transform applied to mapping coordinate (u,v,w) to </span></div>
<div class="line"><a name="l00662"></a><span class="lineno">  662</span>&#160;  <span class="comment">// convert it into a texture coordinate.</span></div>
<div class="line"><a name="l00663"></a><span class="lineno">  663</span>&#160;  <a class="code" href="class_o_n___xform.html">ON_Xform</a> m_uvw;</div>
<div class="line"><a name="l00664"></a><span class="lineno">  664</span>&#160; </div>
<div class="line"><a name="l00665"></a><span class="lineno">  665</span>&#160;  <span class="comment">// Custom mapping primitive.</span></div>
<div class="line"><a name="l00666"></a><span class="lineno">  666</span>&#160;  <a class="code" href="class_o_n___object.html">ON_Object</a>* m_mapping_primitive;</div>
<div class="line"><a name="l00667"></a><span class="lineno">  667</span>&#160; </div>
<div class="line"><a name="l00668"></a><span class="lineno">  668</span>&#160;  <span class="keyword">static</span> TYPE TypeFromInt( <span class="keywordtype">int</span> i );</div>
<div class="line"><a name="l00669"></a><span class="lineno">  669</span>&#160;  <span class="keyword">static</span> PROJECTION ProjectionFromInt( <span class="keywordtype">int</span> i );</div>
<div class="line"><a name="l00670"></a><span class="lineno">  670</span>&#160;  <span class="keyword">static</span> TEXTURE_SPACE TextureSpaceFromInt( <span class="keywordtype">int</span> i);</div>
<div class="line"><a name="l00671"></a><span class="lineno">  671</span>&#160; </div>
<div class="line"><a name="l00672"></a><span class="lineno">  672</span>&#160;  ON__UINT32 MappingCRC() <span class="keyword">const</span>;</div>
<div class="line"><a name="l00673"></a><span class="lineno">  673</span>&#160;};</div>
<div class="line"><a name="l00674"></a><span class="lineno">  674</span>&#160; </div>
<div class="line"><a name="l00675"></a><span class="lineno">  675</span>&#160;<span class="preprocessor">#if defined(ON_DLL_TEMPLATE)</span></div>
<div class="line"><a name="l00676"></a><span class="lineno">  676</span>&#160;<span class="comment">// This stuff is here because of a limitation in the way Microsoft</span></div>
<div class="line"><a name="l00677"></a><span class="lineno">  677</span>&#160;<span class="comment">// handles templates and DLLs.  See Microsoft&#39;s knowledge base </span></div>
<div class="line"><a name="l00678"></a><span class="lineno">  678</span>&#160;<span class="comment">// article ID Q168958 for details.</span></div>
<div class="line"><a name="l00679"></a><span class="lineno">  679</span>&#160;<span class="preprocessor">#pragma warning( push )</span></div>
<div class="line"><a name="l00680"></a><span class="lineno">  680</span>&#160;<span class="preprocessor">#pragma warning( disable : 4231 )</span></div>
<div class="line"><a name="l00681"></a><span class="lineno">  681</span>&#160;ON_DLL_TEMPLATE <span class="keyword">template</span> <span class="keyword">class </span>ON_CLASS <a class="code" href="class_o_n___class_array.html">ON_ClassArray&lt;ON_TextureMapping&gt;</a>;</div>
<div class="line"><a name="l00682"></a><span class="lineno">  682</span>&#160;ON_DLL_TEMPLATE <span class="keyword">template</span> <span class="keyword">class </span>ON_CLASS <a class="code" href="class_o_n___object_array.html">ON_ObjectArray&lt;ON_TextureMapping&gt;</a>;</div>
<div class="line"><a name="l00683"></a><span class="lineno">  683</span>&#160;<span class="preprocessor">#pragma warning( pop )</span></div>
<div class="line"><a name="l00684"></a><span class="lineno">  684</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00685"></a><span class="lineno">  685</span>&#160; </div>
<div class="line"><a name="l00686"></a><span class="lineno">  686</span>&#160; </div>
<div class="line"><a name="l00687"></a><span class="lineno">  687</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00688"></a><span class="lineno">  688</span>&#160; </div>
<div class="ttc" id="aclass_o_n__3d_point_html"><div class="ttname"><a href="class_o_n__3d_point.html">ON_3dPoint</a></div><div class="ttdef"><b>Definition:</b> opennurbs_point.h:419</div></div>
<div class="ttc" id="aclass_o_n__3d_vector_html"><div class="ttname"><a href="class_o_n__3d_vector.html">ON_3dVector</a></div><div class="ttdef"><b>Definition:</b> opennurbs_point.h:953</div></div>
<div class="ttc" id="aclass_o_n___binary_archive_html"><div class="ttname"><a href="class_o_n___binary_archive.html">ON_BinaryArchive</a></div><div class="ttdef"><b>Definition:</b> opennurbs_archive.h:732</div></div>
<div class="ttc" id="aclass_o_n___brep_face_html"><div class="ttname"><a href="class_o_n___brep_face.html">ON_BrepFace</a></div><div class="ttdef"><b>Definition:</b> opennurbs_brep.h:991</div></div>
<div class="ttc" id="aclass_o_n___class_array_html"><div class="ttname"><a href="class_o_n___class_array.html">ON_ClassArray</a></div><div class="ttdef"><b>Definition:</b> opennurbs_array.h:822</div></div>
<div class="ttc" id="aclass_o_n___cylinder_html"><div class="ttname"><a href="class_o_n___cylinder.html">ON_Cylinder</a></div><div class="ttdef"><b>Definition:</b> opennurbs_cylinder.h:29</div></div>
<div class="ttc" id="aclass_o_n___interval_html"><div class="ttname"><a href="class_o_n___interval.html">ON_Interval</a></div><div class="ttdef"><b>Definition:</b> opennurbs_point.h:49</div></div>
<div class="ttc" id="aclass_o_n___line_html"><div class="ttname"><a href="class_o_n___line.html">ON_Line</a></div><div class="ttdef"><b>Definition:</b> opennurbs_line.h:21</div></div>
<div class="ttc" id="aclass_o_n___mapping_tag_html"><div class="ttname"><a href="class_o_n___mapping_tag.html">ON_MappingTag</a></div><div class="ttdef"><b>Definition:</b> opennurbs_mesh.h:916</div></div>
<div class="ttc" id="aclass_o_n___mesh_html"><div class="ttname"><a href="class_o_n___mesh.html">ON_Mesh</a></div><div class="ttdef"><b>Definition:</b> opennurbs_mesh.h:990</div></div>
<div class="ttc" id="aclass_o_n___object_array_html"><div class="ttname"><a href="class_o_n___object_array.html">ON_ObjectArray&lt; ON_TextureMapping &gt;</a></div></div>
<div class="ttc" id="aclass_o_n___object_html"><div class="ttname"><a href="class_o_n___object.html">ON_Object</a></div><div class="ttdef"><b>Definition:</b> opennurbs_object.h:377</div></div>
<div class="ttc" id="aclass_o_n___plane_html"><div class="ttname"><a href="class_o_n___plane.html">ON_Plane</a></div><div class="ttdef"><b>Definition:</b> opennurbs_plane.h:21</div></div>
<div class="ttc" id="aclass_o_n___simple_array_html"><div class="ttname"><a href="class_o_n___simple_array.html">ON_SimpleArray</a></div><div class="ttdef"><b>Definition:</b> opennurbs_array.h:47</div></div>
<div class="ttc" id="aclass_o_n___sphere_html"><div class="ttname"><a href="class_o_n___sphere.html">ON_Sphere</a></div><div class="ttdef"><b>Definition:</b> opennurbs_sphere.h:23</div></div>
<div class="ttc" id="aclass_o_n___text_log_html"><div class="ttname"><a href="class_o_n___text_log.html">ON_TextLog</a></div><div class="ttdef"><b>Definition:</b> opennurbs_textlog.h:23</div></div>
<div class="ttc" id="aclass_o_n___texture_mapping_html"><div class="ttname"><a href="class_o_n___texture_mapping.html">ON_TextureMapping</a></div><div class="ttdef"><b>Definition:</b> opennurbs_texture_mapping.h:38</div></div>
<div class="ttc" id="aclass_o_n___u_u_i_d_html"><div class="ttname"><a href="class_o_n___u_u_i_d.html">ON_UUID</a></div><div class="ttdef"><b>Definition:</b> opennurbs_uuid.h:32</div></div>
<div class="ttc" id="aclass_o_n___xform_html"><div class="ttname"><a href="class_o_n___xform.html">ON_Xform</a></div><div class="ttdef"><b>Definition:</b> opennurbs_xform.h:29</div></div>
<div class="ttc" id="aclass_o_n__w_string_html"><div class="ttname"><a href="class_o_n__w_string.html">ON_wString</a></div><div class="ttdef"><b>Definition:</b> opennurbs_string.h:701</div></div>
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